Olivier piette



0. PIETTE. HORIZONTAL COKING OVEN. APPLICATION FILED Nov. 6. 1918.

Patent-ed Aug. 9,1921.

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1,386,799 Patented Aug. 9, 1921.

2 SHEETS-SHEET 2- Fig. 2.

UNITED STATES PATENT OFFICE.

OLIVIER PIET'IE, or PARIS, FRANCE, ASSIGNOR rro SOCIT ANONYME DES FOURS A COKE sEMET-sOLvAY & rrnfrfrn, A. CORPORATION or BELGIUM.

HORIZONTAL COKINGLVEN.

Specification of Letters Patent.

Patented Aug. 9, 1921.

Application filed November 6, 1918. Serial No. 261,423.

To all whom/ may concern:

' Be it known that I, OLIVIER IInrrn, of Brussels, Belgium, at rpresent carrying on business at Paris, France, subject of the King'of theBelgians, have invented certain new and useful Improvements in Horizontal CoklngeOvens, of which the following is a specification.

The present invention relates to horiontal coking ovens with vertical Iiues and of theregenerative type arranged for heating with blast furnace or producer gas. In a certain class of ovens of the above type the checker work for one phase of the air preheating was situated in two arched chambers located under the ovens and to one side Vof the longitudinal battery center line and extending parallel vto same and connected in series with one another by ducts,

the area of which was increased in order to obtain a suitablev distribution of air to the retorts of the battery, in proportion to their-distances from the chimney, and the "l checker work forthe other phase was situated in two other arched chambers located on the opposite side of the battery center line and extending parallel to the same and connected in the same manner as the first mentioned pair-` Y The object of this invention is to provide meansA for operating regenerators, positioned as described above, in parallel instead of in series to enable both air and producergas or blast furnace gas to be preheated.

Another object of this invention is to provide means for heating Ovens with coke oven gas or producer' gas or blast furnace gas or any combination of the same.

The annexed drawings illustrate the construction embodying my invention.

Figure l is a semi*verticallongitudinal section through a pieddroit "or flue base.

Fig. 2 is a transverse sectionv of the oven through an air recuperator on line A-B of Fig. 1.

"Fig, 3 is a transverse section of the oven through an air recuperator on line C-D of Fig. l, and

F ig. 4 is a horizontal section through the recuperator galleries and the channels leading to the chimney.

In vthe f following description primed reference numbers 'are employed to designate similar members or structure to thosedesignated by the original numbers, but located pn the opposite side of the battery center In the oven walls adjacent to the oven l are located a/pluralityy of heating iiues 2 and 2 which communicate by means of gas ports 3 and 3 with aplurality of gas chambers -l and 4L located directly beneath them and into which coke oven' gas is introduced by pipes m and m provided with stop valves indicated by crosses on Fig. l. One-half of the chambers in each wall are fed with gas by means of pipes m and the other half by means of pipes m.

Heating flues 2 and 2 communicate by means of twyers 5 and 5 with sole flues located beneath the retorts which are divided transversely into halves 6 and 6 by means pf walls 8 situated on the battery center ine. v

Underneath the sole fines and extending at right angles to the same and parallel to the battery center line are located the regenerators a and a and b and b; alternate half sole flues 6 and 7 communicate with regenerators and a respectively, half soleA iues 6 communicating 'with regenerator b by means of flue 9 controlled by damper 10 and half soleflues Zwith regenerator a by means of flue 16 which is controlled by a damper not shown but similar to damper IO; half sole flues 6v and 7 are connected in a corresponding manner with regenerators Zi and a respectively.

The regenerators Z) and b and flues g and g are divided by walls ll and 1l in such a manner that each chamber so formed communicates only with one sole flue 6 and 6 and :dues al and al respectively.V In regenerators a and a the checker work only is divided by walls 12 and l2 leaving a flue under the Vcrown of the arch ef each chamber. Beneath the checker work'of the regenerators a and a are pairs of connecti ing arched flues c and c extending parallel to the battery center line and connecting with their respective regenerators a and a by means of ports f and f respectively which pierce the varched roof of saidfiues,

7c respectively. The cross sectional area of flues 7c and la is increased in proportion to their distances from the chimney whereby a suitable distribution of the air (or gas as will be explained later) is obtained. 1n the iues 7c and lo are placed valves or dampers z' and z respectively. Gas pipes 3rovided with valves It and h open into ing into the chimney 13 through reversing valve 0 are provided with regulating dampers r 'for regulating the drattand special dampers s and s. Reversing valve 'v is shown in Fig. 4 as a butterfly valve revoluble about a vertical axis through its center line so that it may also take the position shown by dotted lines` in Fig'. 4.

Vhen heating with coke oven gas the device operates as follows:

y Assuming that combustion is to take place in the heating iiues kon the left hand sidel (see Fig. l) of the battery center line and coke oven gas to be used as the heating'med ium, reversing valve o being positioned as shown by solid lines in Fig. 4, air is admitted to fines-Z and c through air inlet 14 andr fluesv d Aand C are connectedto the chimney. Valves z' and dampers 8 and s are open and valves r are set for ther proper intensity ot draft, and gas reversing lcocks z. and h are closed, pipes m being open. and pipes m closed.

Air passes through the iue cl, valves z',-

lues 7c and g into regenerators 7),-Where it is preheated, flowing in parallel with another current of air which ows through the tlues c, ports;c into regenerators a, being lilreivise'heated therein.

rThe air from regenerator b passing through port 9f-enters sole flue 6 passing thence through twyers 5 into the left hand lgroup of. combustion flues 2 in eachl of the-Y side Walls of its superimposed retort. Preheated air from regenerator a enters sole flue 7 through ports 16, passing thence into the left hand group of combustion finesv 2- through twyers 5 positioned opposite to those opening from sole flue 6. Coke oven gas is admitted to gas vchambers 4 throughpipesm, from whence it issues through ports 3 into combustion 'flucs 2 Where it encounters the preheated air issuing fromV flues 6 and 7 through ports 5 and ignites.'L Rising through left hand flues 2 the products of combustion enter horizontal flue 15 and pass-to the right hand group of iues 2 in which they descend entering the sole fines 6 and 7 by means of twyers 5 passing thence into ktheir respective generators a and b. The products of combustiony entering the regenerator a give up a portion of their heat to the same and escape through ports 7 into flues #and thence into theV chimney. Similarly the products entering the chamber vescape by ues 7c and la. Flues o and c and l and d open'-V ney. Vhen regenerators a and b are heated suiiiciently the currents of air and gas are reversed as follows:

Reversing valve @is positioned at right angles to its previous position, that is, in the postion shown by dotted lines on Fig. 4.

VAir from the inlet 14is now directed by reversing valve vinto flues cl and c passing from Z into regenerators Z/ through flues V7n and g and thence to combustion flues 2 by means of tWyers 5. Air 'from iues c rises through ports f into regenerators a whence it passes to sole lues 7 and into the combustion lues 2 in the Walls of the retorts located over the fines 7. The products of combustion will follow a similar path to that previously described through is closed land that in 7i is opened. Air-*Will now be heated in the regenerators a and.VV

producer gas-in regenerators b whence they will pass to the combustlon fluesQ Where .they will meet and ignite,.the products ofk combustion heating regeneratorsa and. b

on their path to the chimney aspreviously described. VJhen the flow of air and gasisto 'be reverseddampers s ande" areopened,

the reversing valve is positioned as shownv by the solid lines in Fig. 4, dampers s and z' being closed. The valve in piping 7L is closed and the valve in piping g, opened. hir will now be directed by valve o intoregenerators a and gas Will beladmittedinto regenerator b -throughpiping It, ducts-L 7c and g. Air and` gas will meet inV combustion 'dues 2 and thel products otcombustion Will esca )e from the batter as Vreviousl described. l v

1t is evident thatrwhen combination of gases is to Vbe employed for heating it is only necessary toV admit coke oven gas on vthe same side yas that on Whichblast furnace or producer gas is ,being admitted; theV operation, otherwise, that isin respect tothe air for combustion andthe disposal. of the products of combustion, being,- the same as previously described.

Claims:

1. 1n a horizontal coking oven, in combination, a series of colring chambers, a series of combustion chambers, a l pair of@ regenerators disposed perpendicularly to said chambers, a series ot sole lues; extending'.l parallel to said chambersalternate ysoleflues being connected with the-same regenerator, a series. off gas; chambers, means vfonsupplyingl gasY to saidfgas chambers, eachl combusmeans of` fluesgQk andai into the chimtion chamber having connections -vvith two 13o adjacent sole flues and with a gas chamber, means for supplying gas to one of said regenerators and means for supplying air to both regenerators, whereby it is possible to supply the combustion chambers with a richer gas from the gas chambers, and with air from both regenerators, 0r to supply them with a poorer gas through one regenerator and with air through the other regenerator. v 2. In a horizontal coking oven, in combination, `a series of coking chambers, a series of combustion chambers, a pair of regenerators disposed perpendicularly to said chambers, a series of sole lues extending parallel to said chambers, alterna-te sole flues being connected with the same regenerator, a se ries of gas chambers, means for supplying gas to said gas chambers, each combustion chamber having connections with two adjacent sole fiues and with a gas chamber, the connection with the gas chamber being l0- cated between the connections with the sole ilues, means for supplying gas to one of said regenerators and means for supplying air to both regenerators, whereby it is possible t0 supply the combustion chambers with aV richer gas from the gas chambers, and with air from both regenerators, or to supply them with a poorer gas through one regenerator and with air through the other regenerator. i

In witness whereof I have signed this specification in the presence of two witnesses.

OLIVIER PIETTE.

Witnesses PAUL GOFFARD, ALEXIS HEUPJEUX. 

